Electronics World articles Popular Electronics articles QST articles Radio & TV News articles Radio-Craft articles Radio-Electronics articles Short Wave Craft articles Wireless World articles Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors LinkedIn Crosswords Engineering Humor Kirt's Cogitations RF Engineering Quizzes Notable Quotes Calculators Education Engineering Magazine Articles Engineering software RF Cafe Archives Magazine Sponsor RF Cafe Sponsor Links Saturday Evening Post NEETS EW Radar Handbook Microwave Museum About RF Cafe Aegis Power Systems Alliance Test Equipment Centric RF Empower RF ISOTEC Reactel RF Connector Technology San Francisco Circuits Anritsu Amplifier Solutions Anatech Electronics Axiom Test Equipment Conduct RF Copper Mountain Technologies Exodus Advanced Communications Innovative Power Products KR Filters LadyBug Technologies Rigol TotalTemp Technologies Werbel Microwave Windfreak Technologies Wireless Telecom Group Withwave RF Cafe Software Resources Vintage Magazines RF Cafe Software WhoIs entry for RF Cafe.com Thank you for visiting RF Cafe!
Anatech Electronics RF Microwave Filters - RF Cafe

Innovative Power Products Passive RF Products - RF Cafe

Innovative Power Products Passive RF Products - RF Cafe

Please Support RF Cafe by purchasing my  ridiculously low-priced products, all of which I created.

RF Cascade Workbook for Excel

RF & Electronics Symbols for Visio

RF & Electronics Symbols for Office

RF & Electronics Stencils for Visio

RF Workbench

T-Shirts, Mugs, Cups, Ball Caps, Mouse Pads

These Are Available for Free

Espresso Engineering Workbook™

Smith Chart™ for Excel

RF Cascade Workbook 2018 - RF Cafe

Tolerance Calculator Graph
May 1963 Electronics World

May 1963 Electronics World

May 1963 Electronics World Cover - RF Cafe  Table of Contents

Wax nostalgic about and learn from the history of early electronics. See articles from Electronics World, published May 1959 - December 1971. All copyrights hereby acknowledged.

Here is a type of chart I don't recall seeing before. This Tolerance Calculator Graph makes it very easy to quickly determine the upper and lower extremes of tolerance values for resistors, capacitors, inductors, etc. It was published in a 1963 issue of Electronics World magazine, and can actually be used to find the limits for any number, regardless of units. This is one example of where a physical visual aid can still yield results faster than punching numbers into a calculator, if a number with just a couple significant figures of precision is sufficient.

Tolerance Calculator Graph

By Robert K. Re

Useful chart that can be employed to determine plus and minus values of a number within the tolerance limits of +100% to -75%.

Many times during circuit testing and troubleshooting it is necessary to compute the tolerance of a component or parameter to determine if it is within limits. Specified, usually, as a per-cent of a nominal value, these calculations require the use of a slide rule or pencil and paper, in addition to taking up valuable servicing time.

Using the Graph

Tolerance Calculator, May 1963 Electronics World - RF CafeTo use the calculator, find the number on the "Nominal Value" scale and go across to the ± % tolerance line desired. Drop down to the "Tolerance Value" scale and read the ± tolerance value. Thus the number 60 ± 20% has tolerance limits of 48 and 72; this can apply to 6000 ohms, 600 kc., 0.6 mhy., $6.00, or just about any type of parameter or component value you may come across.

Don't worry about the decimal point: if you start out in kilohms, your answer will be in kilohms; if you start out in μf., your results will be in μf. (or their fractional parts).

Mounted on the wall near your bench, this calculator will always be ready to give you those tolerance values you require to help speed that servicing job.

This tolerance calculator can minimize the time required for calculations giving the plus and minus values of a number within the tolerance limits of +100% to -75%.



Posted July 4, 2024
(updated from original post on 10/20/2016)

RF Cascade Workbook 2018 - RF Cafe
withwave microwave devices - RF Cafe

Axiom Test Equipment - RF Cafe

ConductRF Phased Matched RF Cables - RF Cafe